Oxygen Sensor difficulty :(

[Roadster90]

Trying to R & R......

Started car and let idle 60 seconds or so.

Have the special socket and attempted removeal...

with fairly hard pressure would only turn (reluctantly) about a 1/8 of a turn..

Now what please

Thanks,

Nic

[Guest EDBS0]

Confirm ... Rightie tightie" and "Lefty Loosie".

Mine creaked and groaned for about 1/2 of a turn and let go and was finger loose.

I would turn another 1/8 and another 1/8 and so on and so on.

I wish you good luck, Robert

[Ronnie]

Turn in until moderate resistance is felt. Then out until it gets hard to turn again. Spray with penetrating oil. Let sit 15 minutes. Repeat from the beginning turning in and out until it loosens up. You don't need to spray every time.

IF you keep trying to twist it out by just unscrewing it with more and more pressure, it could seize up and you will have real problems.

[Guest alex_houston]

Do it COLD! Never with a hot manifold.

[Roadster90]

Thanks for the replies folks... I think someone had maybe tightened the sensor to tight once before (probably me)....was very difficult to get out (used TD's procedure with the Krohl oil), and it pulled the bottom thread (on the sensor) out with it... Retorqued/tightened it "like a spark plug" and it felt fine...keeping my fingers crossed .

[Guest EDBS0]

Congrtulations, you got it.

[wwebb]

Not so easy for me, sprayed with penetrating oil, I even put a wrench to extend out the ratchet handle for more leverage and could not budge it. What now, mechanic and torch? I am concerned if I put any more power behind the ratchet something is going to break. :-/

[Guest EDBSO]

Just my opinion, I started by heating it up by running for a minute. When it lets go it will "pop" and then it turned easily.

[wwebb]

Standard socket handle, even with Godzila pulling it, not enough leverage. 24" breaker bar is what got it out. :-)

[padgett]

Wow. Is no reason for it to be that tight but guess some think that anything that takes that big a wrench should be torqued.

[Richard S]

Is there any reason why one should not put anti-sieze on the threads when reassembling?

[wwebb]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Richard S</div><div class="ubbcode-body">Is there any reason why one should not put anti-sieze on the threads when reassembling? </div></div>

The new unit I installed already had anti-seize on the threads.

[padgett]

I do.

[Guest MauiWowee]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: padgett</div><div class="ubbcode-body">I do. </div></div>

Yep

[wwebb]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: padgett</div><div class="ubbcode-body">Wow. Is no reason for it to be that tight but guess some think that anything that takes that big a wrench should be torqued. </div></div>

Not being the original owner of the car nor the person who installed the previous O2 sensor, no telling how long ago the previous sensor had been installed--could have been original equipment for all I know. So even if the removed O2 had antiseize, how long antiseize remains effective is an interesting question.